Real incidents and fixes from running a WordPress hosting platform, with the numbers behind them.
A one-second 503 got stuck in front of every visitor, and later a cached redirect looped a homepage. What went wrong and the three rules we added.
A crawler followed about 51,000 add-to-cart and remove links in one day. Every visit skipped the cache. Here is why and how we blocked it.
A WordPress login rate limit counted every visit to the login page, so logging out and back in locked people out for ten minutes.
Posts with Cyrillic slugs redirected to themselves forever while HEAD checks said 200 OK. How we found it, what fixed it and how to prevent it.
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